Use After Free Affecting busybox-petitboot package, versions <1:1.34.1-1.13.amzn1


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating

    Threat Intelligence

    EPSS
    0.24% (63rd percentile)

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  • Snyk ID SNYK-AMZN201803-BUSYBOXPETITBOOT-2348063
  • published 20 Jan 2022
  • disclosed 15 Nov 2021

How to fix?

Upgrade Amazon-Linux:2018.03 busybox-petitboot to version 1:1.34.1-1.13.amzn1 or higher.
This issue was patched in ALAS-2022-1558.

NVD Description

Note: Versions mentioned in the description apply only to the upstream busybox-petitboot package and not the busybox-petitboot package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the handle_special function

CVSS Scores

version 3.1
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NVD

7.2 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    High
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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Red Hat

6.6 medium
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SUSE

6.6 medium